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DTC codes / P28xx · Transmission / P2871
P2871 indicates that the transmission control module has detected a fault in the clutch A circuit, specifically that the clutch is not engaging or disengaging as commanded, often appearing stuck in the disengaged position. The computer monitors clutch position and hydraulic or electrical response, and when the actual state deviates from the desired state for a calibrated time, it sets this code and may illuminate the warning light.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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